Possible Clues:

• Fish without a vessel in Rhys's sea
• Gulfweed, or a floating mass of it
• A gas explosion involving Ross Sea
• Floating seaweed
• So a grass grows badly in this Atlantic sea
• Sea in the western Atlantic known as a breeding ground for eels
• See 19
• Seaweed giving name to a sea
• True stories about river fronts producing algae
• The ____ Sea is the place where eels breed